Magnetite and hematite deposit in native rock, mica, feldspar is there very little, it is difficult to become China clay resourcesOnly the limonite is weathering secondary ore, mica, feldspar will resident may be near, the clay;
Clay also known as kaolin, is the main raw material for ceramics. The clay is composed of metamorphic mica and feldspar, in which sodium and potassium, calcium and iron loss, water changes into.
